Met office
UK Outlook for Tuesday 27 Mar 2018 to Thursday 5 Apr 2018:
Rain is likely for southern and central areas on Tuesday, with sunny spells and showers in the north. These showers will become more widespread for Wednesday, with snow flurries for northern hills. For the rest of this period, the weather will remain changeable, with showers and rain at times, interspersed by drier and brighter interludes. Snow may also occur at times, more especially in the north. Temperatures are likely to be rather cold, with an increasing risk of overnight frosts mainly away from the south. The Easter weekend is too far away to be confident with any details. The most likely scenario currently is a spell of colder than average weather, with increased likelihood of overnight frosts, and a greater than normal chance of snow showers, especially in the north.
UK Outlook for Friday 6 Apr 2018 to Friday 20 Apr 2018:
Colder than average conditions are likely to prevail overall in April. It will often be showery, with fairly light winds, and a continued chance of overnight frosts. The showers could be heavy with hail and thunder at times, but there are also likely to be good spells of sunshine in-between. Showers or longer spells of rain could occasionally fall as snow, mainly over higher ground and in the north. Any milder, wetter and windier spells are likely to be relatively short lived. Towards the middle of the month, it is possible that we could start to see some warmer temperatures, less cold nights, and it may become drier generally.
https://www.metoffice.gov.uk/public/weather/forecast